Definitions
1.nounA black mark left on a road surface from the sliding or skidding tires of a motor vehicle that has lost traction.
2.nounAny other mark or stain left on a surface from a sliding or rubbing object."The girl had skid marks on the knees of her jeans."
3.nounA visible feces stain left on underpants, trousers, or sometimes the toilet bowl.
4.nounA mark of a soiled finger wiped on a surface.
5.nounAny burn on the skin caused by scraping the skin against a surface.